In view of the current online operation of JP cabinets (electric control cabinets, power cabinets), there are common problems, such as: animals bring dead branches and sundries into the cabinet through the JP cable inlet and outlet holes, destroying and affecting the normal operation of the JP cabinet. In severe cases, the switch in the JP cabinet may be burnt, causing a large-scale blackout. The "JP cabinet blocker" blocks the inlet and outlet holes of the JP cabinet, which can effectively solve the above hidden dangers in the current JP cabinet and prevent small animals from entering the cabinet.